Abstract
Elements present in groups III through VII as well as some of the transition elements form pentacoordinated molecules; although at present the group V elements make up the major fraction of such substances. The most prevalent geometry assigned to these molecules is the trigonal bipyramidal structure. In general, differences are expected in bonding properties in any reasonable pentacoordinated structure purely on the basis of geometrical considerations. Specifically, in the trigonal bipyramidal model, bonding in the trigonal plane should differ from that in the axial positions. Variations in bonding resulting from changes in the central atom as well as ligand changes are also expected.
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References
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Holmes, R.R. (1964). The Nature of Bonding in Some Pentacoordinated Molecules. In: Gutmann, V. (eds) Proceedings of the 8th International Conference on Coordination Chemistry. Springer, Vienna. https://doi.org/10.1007/978-3-7091-3650-8_41
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DOI: https://doi.org/10.1007/978-3-7091-3650-8_41
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